The disclosure relates to a switching process for switching in an autostereoscopic display device from a first view mode to a second view mode, wherein the autostereoscopic display device comprises a display panel, a lenticular device and means for applying a voltage, the process comprising the application of a switching voltage across both switching electrodes of the lenticular device wherein a ramp voltage is applied that increases during a ramp period of at least 0.50 second from a starting voltage at which the lenticular device is in its, first view mode to a final voltage at which the lenticular device is in its second view mode, wherein during at least 0.40 second of the ramp period, the ramp voltage is at an intermediate voltage that is in the range of 5-60% of the minimal voltage; and the final voltage is equal to or higher than minimal voltage.
Legal claims defining the scope of protection, as filed with the USPTO.
3. Switching process according to any of claim 2, wherein the intermediate voltage is an alternating voltage with a frequency in the range of 0.1-15 Hz, in particular in the range of 1.0-10 Hz.
4. Switching process according to claim 1, wherein the ramp period is 40 seconds or less.
5. Switching process according to any of claim 4, wherein the intermediate voltage is an alternating voltage with a frequency in the range of 0.1-15 Hz, in particular in the range of 1.0-10 Hz.
6. Switching process according to claim 1, wherein the intermediate voltage is an alternating voltage with a frequency in the range of 0.1-15 Hz, in particular in the range of 1.0-10 Hz.
7. Switching process according to claim 1, wherein the final voltage is in the range of 14-80 V.
8. Switching process according to claim 1, wherein the final voltage is an alternating voltage with a frequency of 45 Hz or more, in particular 50 Hz or more.
9. Switching process according to claim 1, wherein the final voltage is an alternating voltage with a frequency in the range of 0.5-12 Hz, in particular in the range of 1.0-8.0 Hz.
10. Switching process according to claim 1, wherein the final voltage is applied during at least 10 minutes, in particular during at least 25 minutes.
11. Switching process according to claim 10, wherein the final voltage is at least three times higher than the minimal voltage for the second view mode.
12. Switching process according to claim 1, wherein the final voltage is at least three times higher than the minimal voltage for the second view mode.
13. Switching process according to claim 1, wherein, after the final voltage has been reached, the voltage across both switching electrodes is reduced to a voltage that is at least as high as the minimal voltage for the second view mode.
14. Switching process according to any of claim 1, wherein the intermediate voltage is an alternating voltage with a frequency in the range of 0.1-15 Hz, in particular in the range of 1.0-10 Hz.
15. Switching process according to any of claim 1, wherein the final voltage is in the range of 14-80 V.
17. Autostereoscopic display device according to claim 16, wherein the lenticular elements as well as their surfaces with liquid crystal alignment properties consist of the same material.
18. Autostereoscopic display device according to claim 16, wherein the minimal voltage for the second view mode is in the range of 5-15 V, in particular in the range of 7-12 V.
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December 27, 2019
March 5, 2024
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